8TEN Deck Spindle for Cub Cadet PRO Z 160 L S ZTX4 ZTX5 ZTX6 60 Z160 Z260 918-07386

What It Is

This 8TEN deck spindle is a direct replacement for the OEM spindle assembly on Cub Cadet PRO Z commercial zero-turn mowers, designed to drive the mower blades on 60-inch decks. It’s suited for high-use residential or light commercial mowing where a reliable, drop-in spindle is needed.

Fitment & Compatibility

Before buying, verify your mower model and deck size—this spindle fits Cub Cadet PRO Z 160 L S, ZTX4, ZTX5, ZTX6 (60-inch), Z160, and Z260 models. The OEM part number is 918-07386. Measure the spindle shaft diameter (typically 1 inch) and bolt pattern (three-hole, 3.5-inch center-to-center) to confirm. It replaces OEM spindles from Cub Cadet, MTD, and Troy-Bilt on select 60-inch decks. Check the deck pulley and blade adapter for wear—these may need separate replacement.

Key Things to Know

• Quality: 8TEN is an aftermarket brand; this spindle includes sealed bearings and a hardened shaft, comparable to OEM but at a lower price.
• Installation: Moderate difficulty—requires removing the deck, pulley, and blade. Use a torque wrench for the center bolt (typically 40-50 ft-lbs). No special press needed.
• Common gotchas: The spindle housing may be slightly different from OEM; verify the bolt holes align with your deck. Some users report the grease fitting is in a different position—check clearance before tightening.
• Bearings: Pre-lubricated and sealed, but adding a dab of grease during install extends life. If your deck has heavy rust, replace all three spindles at once to avoid uneven wear.

Should You Buy It

If you own a Cub Cadet PRO Z with a 60-inch deck and need a budget-friendly spindle that matches OEM specs without the dealer markup, this is a solid choice. It’s best for DIYers comfortable with basic mower repairs and looking for a reliable, drop-in replacement that holds up to regular mowing.